Disable virtual/mojo-loading/.../autoplay-crossorigin.html on Site Isolation bots.

This variant of the test runs on Site Isolation Win in addition to the
regular test, hence it also needs to be disabled.

BUG=672570
NOTRY=true
TBR=lukasza@chromium.org

Review-Url: https://codereview.chromium.org/2633513002
Cr-Commit-Position: refs/heads/master@{#443297}

third_party/WebKit/LayoutTests/FlagExpectations/site-per-process

@@ -170,6 +170,7 @@ crbug.com/24182 virtual/mojo-loading/http/tests/perf/large-inlined-script.html [
 
 # https://crbug.com/672570: autoplay-crossorigin.html fails w/ --site-per-process
 crbug.com/672570 http/tests/media/autoplay-crossorigin.html [ Timeout ]
+crbug.com/672570 virtual/mojo-loading/http/tests/media/autoplay-crossorigin.html [ Timeout ]
 
 # https://crbug.com/680201: referrer-policy-attribute-import-no-referrer.html fails w/ --site-per-process
 crbug.com/680201 http/tests/security/referrer-policy-attribute-import-no-referrer.html [ Failure ]